Overview
Benglenisky is the second-most southerly of Connemara’s Twelve Bens, and one few walkers bother to climb on its own. At 516 m it is among the lowest in the range, with a prominence of just 48 m over the col that ties it to its bigger neighbours – enough to earn it a name and a listing, not enough to draw crowds. Its Irish name, Binn Ghleann Uisce, means ‘peak of the glen of the water’, after the wet glen that falls away on its south-east side.
The smart way to walk it is not on its own. Benglenisky is at its best as one leg of a short 7 km loop that also takes in Benlettery and Bengower – three summits, three to four hours, and the full Twelve Bens panorama for a fraction of the effort of the famous Glencoaghan Horseshoe next door.
The walk
Most people start from the Ben Lettery An Óige hostel on the N59, where there is rough parking. It is not a formal, managed car park, so leave room and be considerate of the hostel.
- Short loop (recommended) – A 7 km circuit linking Benlettery, Benglenisky and Bengower, three to four hours on the high ground. It holds a continuous ridge, with the Connemara skyline on one side and the Glencoaghan valley on the other. There is some route-finding over rocky outcrops and boulder, but nothing technical.
- Standalone ascent – A 5 km there-and-back of two to three hours up the western flank from the hostel to the summit cairn. Fine if Benglenisky is the only top you want, though most walkers find it barely worth the drive on its own.
From the cairn the view opens to the south: the full arc of the Twelve Bens, Ballynahinch Lake catching the light, and the rounded Maumturks off to the east.
One caveat worth taking seriously. The western descent is steep and loose, and the stony benches turn greasy after rain, so take it slowly coming down. Skip the hill entirely if cloud is already sitting on the tops – there is nothing to see from the summit in a Connemara mist, and the ground underfoot is unforgiving.
Naming and the marble quarry
The name points straight at the landscape: the water-filled glen below the south-east face. On the north-west side, near Barr na nÓrán, lies one of the old Connemara marble quarries, where the distinctive green stone was worked from the early 19th century and shipped out to floors and altars around the world. Walking the ridge, you are on ground that has seen grazing and stone-cutting for two centuries.
Geography
Benglenisky sits just off the horseshoe ridge around the Glencoaghan valley. A short high spine links it north-east to Bengower (664 m), its parent summit, and a branch runs to Benlettery (577 m) about a kilometre to the north. Because it juts out on its own spur, it makes a fine backdrop from the Ballynahinch estate below, yet stays quiet while walkers chase the 16 km, eight-to-nine-hour Glencoaghan Horseshoe alongside it. The bedrock is the pale quartzite and grit that gives the Bens their sharp, bright profile – Precambrian rock, among the oldest in Ireland.
Practical information
Access is free and year-round, with no gate and no hours. Connemara weather turns fast, so carry waterproofs, wear boots with grip, and bring a map or a downloaded GPX track. The summit plateau is windswept and featureless in poor visibility.
| Attribute | Details |
|---|---|
| Elevation | 516 m (1,693 ft) |
| Prominence | 48 m (157 ft) |
| Classification | Arderin / Myrddyn Dewey |
| Grid ref | L7661650065 |
| OSi map | Discovery 37 |
| Coordinates | 53.486389, -9.859444 |
At 516 m it clears the bar for an Arderin but falls short of the 600 m needed for the Vandeleur-Lynam list, which is part of why it is climbed far less than the higher Bens. The Ben Lettery hostel is the natural base, with dormitory beds if you want to stay over and start early. For current trail reports and route maps, the MountainViews database is the best source.
Nearby
- Ballynahinch Castle – a 17th-century estate with gardens, a café and guided tours.
- Benbaun – the highest of the Bens at 729 m, a longer and more committing day for anyone wanting the full range.
- Ballynahinch Lake – a flat, tree-lined walk for a picnic or a gentle recovery after the descent.
Start before midday. The Atlantic cloud tends to build over the tops through the afternoon, and on Benglenisky the whole point is the view.